A "pipe" is a hollow tube used to transport liquids, gases, or even solids from one place to another. Pipes can be made from various materials, such as metal, plastic, or ceramic, and come in different sizes depending on their purpose. For example, water pipes in homes carry fresh water, while exhaust pipes in cars help remove gases from the engine. In addition to their practical uses, pipes can also be found in music. A musical pipe is an instrument that produces sound when air is blown through it. Instruments like the flute and pipe organ showcase how pipes can create beautiful melodies, adding to the richness of music.